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  <title>Patch a file with an unified diff</title>
 </head>
 <body class="docs"><div id="layout">
  <div id="layout-content"><div id="function.xdiff-file-patch" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">xdiff_file_patch</h1>
  <p class="verinfo">(PECL xdiff &gt;= 0.2.0)</p><p class="refpurpose"><span class="refname">xdiff_file_patch</span> &mdash; <span class="dc-title">Patch a file with an unified diff</span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-function.xdiff-file-patch-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>xdiff_file_patch</strong></span>
    ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$file</code></span>
   , <span class="methodparam"><span class="type">string</span> <code class="parameter">$patch</code></span>
   , <span class="methodparam"><span class="type">string</span> <code class="parameter">$dest</code></span>
   [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$flags</code><span class="initializer"> = DIFF_PATCH_NORMAL</span></span>
  ] ) : <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span></div>

  <p class="para rdfs-comment">
   Patches a <code class="parameter">file</code> with a <code class="parameter">patch</code> and stores the result in a file.
   <code class="parameter">patch</code> has to be an unified diff created by 
   <span class="function"><a href="xdiff_file_diff.html" class="function">xdiff_file_diff()</a></span>/<span class="function"><a href="xdiff_string_diff.html" class="function">xdiff_string_diff()</a></span> function. 
   An optional <code class="parameter">flags</code> parameter specifies mode of operation.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.xdiff-file-patch-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<code class="parameter">file</code></dt>

     <dd>

      <p class="para">
       The original file.
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">patch</code></dt>

     <dd>

      <p class="para">
       The unified patch file. It has to be created using <span class="function"><a href="xdiff_string_diff.html" class="function">xdiff_string_diff()</a></span>, 
       <span class="function"><a href="xdiff_file_diff.html" class="function">xdiff_file_diff()</a></span> functions or compatible tools.
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">dest</code></dt>

     <dd>

      <p class="para">
       Path of the resulting file.
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">flags</code></dt>

     <dd>

      <p class="para">
       Can be either <strong><code>XDIFF_PATCH_NORMAL</code></strong> (default mode,
       normal patch) or <strong><code>XDIFF_PATCH_REVERSE</code></strong> (reversed
       patch).
      </p>
      <p class="para">
       Starting from version 1.5.0, you can also use binary OR to enable
       <strong><code>XDIFF_PATCH_IGNORESPACE</code></strong> flag.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.xdiff-file-patch-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns <strong><code>FALSE</code></strong> if an internal error happened, string with rejected
   chunks if patch couldn&#039;t be applied or <strong><code>TRUE</code></strong> if patch has been successfully applied.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.xdiff-file-patch-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="setthreadtitle.example.basic">
    <p><strong>Example #1 <span class="function"><strong>xdiff_file_patch()</strong></span> example</strong></p>
    <div class="example-contents"><p>
     The following code applies unified diff to a file.
    </p></div>
    <div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$old_version&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'my_script-1.0.php'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$patch&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'my_script.patch'</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$errors&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">xdiff_file_patch</span><span style="color: #007700">(</span><span style="color: #0000BB">$old_version</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$patch</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'my_script-1.1.php'</span><span style="color: #007700">);<br />if&nbsp;(</span><span style="color: #0000BB">is_string</span><span style="color: #007700">(</span><span style="color: #0000BB">$errors</span><span style="color: #007700">))&nbsp;{<br />&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"Rejects:\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #0000BB">$errors</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
    </div>

   </div>
   <div class="example" id="example-2870">
    <p><strong>Example #2 Patch reversing example</strong></p>
    <div class="example-contents"><p>
     The following code reverses a patch.
    </p></div>
    <div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$new_version&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'my_script-1.1.php'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$patch&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'my_script.patch'</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$errors&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">xdiff_file_patch</span><span style="color: #007700">(</span><span style="color: #0000BB">$new_version</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$patch</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'my_script-1.0.php'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">XDIFF_PATCH_REVERSE</span><span style="color: #007700">);<br />if&nbsp;(</span><span style="color: #0000BB">is_string</span><span style="color: #007700">(</span><span style="color: #0000BB">$errors</span><span style="color: #007700">))&nbsp;{<br />&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"Rejects:\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #0000BB">$errors</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
    </div>

   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.xdiff-file-patch-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="xdiff_file_diff.html" class="function" rel="rdfs-seeAlso">xdiff_file_diff()</a> - Make unified diff of two files</span></li>
   </ul>
  </p>
 </div>


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